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Understanding implicit in Scala
...: String)(implicit p: Prefixer) = p.prefix + s
// then probably in your application
implicit val myImplicitPrefixer = new Prefixer("***")
addPrefix("abc") // returns "***abc"
Implicit conversions
When the compiler finds an expression of the wrong type for the context, it will look for an impl...
What are the differences between Perl, Python, AWK and sed? [closed]
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In order of appearance, the languages are sed, awk, perl, python.
The sed program is a stream editor and is designed to apply the actions from a script to each line (or, more generally, to specified ranges of lines) of the input file or...
Open popup and refresh parent page on close popup
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If your app runs on an HTML5 enabled browser. You can use postMessage. The example given there is quite similar to yours.
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How does the “this” keyword work?
I have noticed that there doesn't appear to be a clear explanation of what the this keyword is and how it is correctly (and incorrectly) used in JavaScript on the Stack Overflow site.
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What are the differences between delegates and events?
...esent ... well, events. They are intended to alert someone when something happens and yes, they adhere to a delegate definition but they're not the same thing.
Even if they were exactly the same thing (syntactically and in the IL code) there will still remain the semantical difference. In general I...
Tactics for using PHP in a high-load site
...isn't cutting, there are several techniques to scale up, depending on your app. Replicating to additional servers typically works well if you have more reads than writes. Sharding is a technique to split your data over many machines.
Caching
You probably don't want to cache in your database. The...
Why use Ruby instead of Smalltalk? [closed]
...to facilitate integration. Smalltalk never really gained a body of hybrid application support in the way that Python and Ruby have, so the concept of 'smalltalk as embedded scripting language' never caught on.As an aside, Java was not the easiest thing to interface with other code bases (JNI is fai...
When you exit a C application, is the malloc-ed memory automatically freed?
...Not freeing resources crosses it. The YAGNI principle was also meant to be applied to features, not code that makes the program work correctly. (And not freeing memory is a bug).
– Yacoby
Feb 6 '10 at 15:53
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What does status=canceled for a resource mean in Chrome Developer Tools?
...he source to find all the places where requests could get cancelled, and slapped breakpoints on all of them to debug. From memory, the only places where Chrome will cancel a request:
The DOM element that caused the request to be made got deleted (i.e. an IMG is being loaded, but before the load ha...
LINQPad [extension] methods [closed]
...tents replaced.
NOTE! Remember to .Dump() the DumpContainer itself in the appropriate spot.
To use:
var dc = new DumpContainer();
dc.Content = "Test";
// further down in the code
dc.Content = "Another test";
OnDemand is an extension method that will not output the contents of its parameter to t...